Preparation (How to Use): Boil OFFICIAL STRONG BACK preferably in spring. 1/4 Cup of OFFICIAL STRONG BACK to 1 liter or water. Boil at medium to high heat for 15-25 minute. OFFICIAL STRONG BACK can be used 5-7 times or more until it loses its color. You can drink unsweetened or add agave or date sugar. Keep in mind that processed sugar is not ideal for healthy circulation so use alkaline sweeteners if possible.